A professor at Columbia University railed against Zionists "infiltrating" the Women's March on Facebook, going as far as referring to Zionists as "master thieves."

Hamid Dabashi, who teaches Iranian Studies and Comparative Literature, was irked that actress Scarlett Johansson was a featured speaker at the Women's March since she was once the spokeswoman for SodaStream, which was based in Israel.

"Scarlet Johansson is a violent Zionist deeply committed to the systemic theft of Palestine and the ethnic cleansing of Palestinians from their homeland— she appears on commercials selling Israeli products made on the stolen and occupied Palestinians lands — her appearance on Women's March rallies deeply compromises the moral authority of the movement," Dabashi wrote.

Dabashi called for members of the Women's March to "denounce this pernicious infiltration and appropriation of the movement."

"Zionists are master thieves— they steal Palestinian land and culture, they steal Jewish history and heritage, and they steal every progressive movement to twist it to their advantage— beware!" Dabashi concluded the post.

Dabashi continued his tirade against Johansson in the comments section, where he attacked her for being a "careerist Zionist" and promoting "a product made on stolen Palestinian land and with abused Palestinians labor."

The Columbia professor has a history of vitriolic anti-Israel statements, including calling Israel supporters "Gestapo appratchniks" and that Israelis have "a vulgarity of character," per Discover the Networks. Dabashi is also a Hamas apologist, having once referred to the terror organization as "the poor and impoverished representative of a poor and impoverished people" and disparaged those who criticized Hamas.

"The obscenity of first demonizing Hamas and then blaming it for the vicious war crimes that Israel is perpetrating against Palestinians has now passed any measure of common decency," Dabashi said. "Hamas is the legitimate and democratically elected representative of Palestinian people – a grassroots organization deeply embedded in and integral to the Palestinian national liberation movement."

Hamas had a major electoral victory in the 2006 Gaza elections; the following year they cemented an iron grip on the region after a violent conflict with Fatah. Elections haven't been held in Gaza ever since.

"I learned very little in the course and he contradicted himself a lot, as if he were thinking out loud," one former student wrote on the site. "People became more reluctant to ask questions because he always shut them down and tried to embarrass anyone asking something he did not like."